Brokerage agreement: How to avoid common legal mistakes

Uhr Icon 10 min. Lesedauer
Kalender Icon 04. September 2025

A real estate agent can help in a number of real estate situations: Whether you’re looking for a buyer for your house or you’re a tenant desperately searching for a new apartment, real estate agents are usually familiar with the market and can quickly find the right property. To define all the details surrounding the real estate agent’s contract, a written and signed brokerage agreement should be drawn up.

At a glance

  • The brokerage agreement sets out the general terms and conditions for a brokerage contract. While it’s not mandatory to have it in writing, it’s usually advisable.
  • The broker and client decide what the contract should contain. Important information includes the broker’s fee, duplication of brokerage, and the broker’s scope of duties.

What is a brokerage agreement?

A brokerage or agent contract is an agreement between two parties. The broker is tasked with mediating the conclusion of a transaction or at least initiating the opportunity for it. For the successful completion of this task, the broker receives a brokerage fee from the client – ​​in rarer cases, an expense allowance is also payable in the event of unsuccessful transactions.

In this article, we focus on real estate brokers. These can involve buying and selling, but also renting. Furthermore, there are brokers for jobs or for various commercial transactions or mortgages.

In law, the brokerage contract for real estate agents falls under the category of “simple contract” and is subject to its regulations. You can find the relevant paragraphs in the Swiss Code of Obligations (CO) starting in Article 394 under simple contract, or more specifically, in Article 412 under brokerage contract. In principle, a brokerage contract can be structured differently depending on the situation; however, it is always advisable to adhere to the written form.

What business does a broker handle?

A real estate agent searches for two suitable parties for a real estate transaction. Depending on who commissions the broker, the agent either looks for a suitable buyer for a property or for a suitable property for a client. In Switzerland, the former case predominates: Property owners commission a real estate agent to find a buyer for their house. The specific tasks a real estate agent performs depend primarily on the type of brokerage:

  • Reference brokerage: In this case, the agent’s sole task is to find a suitable other party for the transaction. The client, however, contacts these people and takes care of the contract signing.
  • Intermediary brokerage: In this case, the agent is not only responsible for finding and presenting suitable candidates but also drives the contract signing.

Generally, a real estate agent is responsible for negotiating the best terms for their client. If a real estate agent works for a landlord or seller of a property, they try to sell the property for the highest possible price. However, if the brokerage order comes from a person looking for a property to rent or buy, the broker will try to negotiate the rent or purchase price down as much as possible.

Brokerage agreement – ​​is written form necessary?

The brokerage agreement commissions the broker to conduct the brokerage business. The brokerage agreement—or brokerage contract, as it is called in the law—is treated as a simple contract (see Article 412, Paragraph 2 of the Swiss Code of Obligations).

A brokerage agreement can generally be tailored to individual needs. While written form is not required by law, it can be useful. This allows both parties to establish clear conditions. On the other hand, an oral agreement is equally valid. A brokerage agreement can even be concluded tacitly under certain circumstances.

In the case of non-written agreements, it is always difficult to prove them in the event of a dispute. Generally, for example, tacit acceptance of the brokerage transaction is considered accepted if the property seeker knows that someone is a broker and is searching for properties for them, and they tolerate this. Legally, this is ultimately difficult for both parties to prove.

This should be included in a brokerage agreement

Whether you want to hire a real estate agent to sell your house or find a suitable apartment for you, you should always document the details in a written real estate agency agreement. You can structure the agreement largely as you see fit, as it is form-free. It could include, among other things, the following points:

  • Names of both contracting parties (real estate agent and client)
  • Type of property or what is being sought
  • Amount of commission (usually based on the value of the property)
  • Responsibilities of the real estate agent (What type of real estate agency agreement is being issued? Providing agency or brokerage?)
  • Reimbursement of expenses
  • Is double agency permitted?
  • Exclusivity (Can the client engage other real estate agents?)
  • Duration of the agreement and termination conditions
  • Are there any cantonal regulations?

Facts about brokerage fees – in these cases, clients do not have to pay

Generally, brokers receive a commission for a successfully brokered or closed transaction. A broker may not demand their brokerage fee if the transaction has not yet been closed (see Article 413, Paragraph 2 of the Swiss Code of Obligations). However, a so-called reimbursement of expenses can be agreed upon in the contract. A reimbursement of expenses or an expense allowance guarantees the broker payment for the capital invested, even if the target has not been reached (see Article 413, Paragraph 3 of the Swiss Code of Obligations). This must be stipulated in the brokerage agreement and thus also accepted by the other contracting party. Among other costs, the following may be charged:

  • Fuel costs
  • Expenses
  • Advertising fees

What may not be billed as compensation under any circumstances is working time. The reason for this is that brokerage is a commission-based business, and payment is based solely on the result. Even if the broker is successful, the number of hours of work ultimately is irrelevant – all that matters is the result, and once this is achieved, the broker is entitled to the full commission.

According to Article 415 of the Swiss Code of Obligations (OR), there is a situation in which a broker is not legally entitled to a salary. This is referred to as double brokerage. This basic principle states that a broker may not act for two opposing parties at the same time. For example, they may not work for the potential buyer of a property and the seller of the matching property and accept a fee from both for the brokerage.

There are, however, exceptions: In the case of proof brokerage, double brokerage may be permissible if the broker informs the client in advance. Of course, only if both parties have agreed to this. This consent cannot be obtained retrospectively.

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FAQ: Brokerage agreement

A broker is responsible for brokerage transactions, primarily in the real estate sector. This can involve the purchase or sale of houses or condominiums, or even renting or leasing. A broker ensures that the client finds the right property or the right contracting partner, or actively works towards the conclusion of a contract.

In the brokerage agreement, the two parties establish the general terms and conditions for the brokerage assignment. This should clearly state the objective and the deadline for achieving it. Points such as the amount of commission, any reimbursement of expenses, and the exclusivity of the assignment should also be addressed in the contract.

Real estate agents generally work on a commission basis, meaning they are only paid if the transaction is successful. Typically, the goal of the brokerage assignment is achieved when the contract is signed between the client and the contracting party.

In some cases, brokers may charge an expense allowance regardless of the success of the brokerage assignment. This may include expenses or travel costs, for example, but not the time spent working. The calculation of expense allowances must be stipulated in the brokerage agreement.

No, there are no legal requirements for the written form of a brokerage agreement. Verbal agreements can also be valid. However, it’s always a good idea to have a written contract signed by both the broker and the client.

In double brokerage, the broker acts not only for one party, but for both opposing parties. This is only permitted in the case of proof brokerage and if the clients are aware of it and expressly accept it.

A real estate agent is responsible for serving their client’s interests as best as possible. In almost all cases, these interests do not coincide with those of the other party: For example, a buyer might want the lowest price, while the seller might strive for the highest possible price. For this reason, it cannot be assumed that the real estate agent will conduct their work impartially.

A broker finds suitable contracting parties for their client. However, the client is responsible for establishing contact and closing the deal. A broker, on the other hand, generally takes on more extensive responsibilities: They drive the deal forward and are often involved in the closing of the contract.

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